Paper box.



W. M. WILLIAMS.

PAPER BOX.

APPLICATION FILED APR. 15. I916.

mwmm Patented Apr. 3, 1917.

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WALLACE M. WILLIAMS, F BROOKLYN, NEW YORK.

PAPER BOX.

Specification of Letters Patent.

Patented Apt". a, rat 7..

Application filed April 15, 1916. Serial No. 91,281.

To all whom it may concern:

Be it known that I, WALLACE M. WIL- LIAMS, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, useful Improvements in Paper Boxes, of which the following is a specification.

This invention relates to improvements in boxes and particularly to types made ofthin cardboard, in prismatic form, from a single integral blanl The principal object of the invention is to provide containers in forms cheap to manufacture and which can be packed compactly without waste space.

These and other objects are attained by l the novel form of blank used, together with the bending creases formed therein, the same being hereafter described and shown in the accompanying drawing, forming a material part of this invention, and in which Figure 1 is a perspective view of a box, made in accordance with the invention, indicating the manner of inserting the end elements.

Fig. 2 is a perspective view of the completed box.

Fig. 3 is a plan view of the blank used, and

Fig. 4 is a similar view of a box in a knocked down or fiat condition.

In constructing the box, a blank as shown in Fig. 8 is used, the same comprised of a base or bottom 10, having a substantially central, longitudinal crease 11, a similar crease 12 forming a line of demarcation between it and the side 15, formed with a central opening 16; another longitudinal bending crease 17 extends between the side 15 and the corresponding side 20, having an opening 21, and adjoining the side 20 is a tab 23 capable of being bent along the crease 22.

At the ends of the side 15 are triangular extensions 25, bending creases 26 being formed therebetween, other creases 27 partially separating the wings 28, also triangu- 'lar in shape and integral with the extensions 25. l

have invented new and ments having angular side Fig. 4 shows the same the lines 11 and 17, the tab 23 being folded on line 22 and gummed to the inner side of the bottom 10, the crease 11 allowing the parts to be flat folded With the ends extended.

The panels 16 and 21 may be covered by thin transparent material 30, either clear or colored, as gelatin, celluloid, or the like, the coverings preventing articles contained in the box from passing out of the openings, although being exposed plainly to view.

When it is desired to use the box, it is formed by the fingers into triangular shape, the ends being folded on line 26 and the Wings 28 turned inward on the lines 27 until they will pass within the body of the box, when their normal resilience causes them to open or expand and tightly adhere within its interior.

Thus the boxes may be kept in stock witha smallspace and opened to be filled as required, without the use of adhesives or fastenings of any kind.

blank folded along It is also to be noted that no interlocking or interengaging elements are necessary, no perforations made and no strings used.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is zx 1. In a prismatic paper box, an integral blank forming the three main sides thereof, one or more of said sides being apertured, a single element projecting from each end of one of said sides, said end elements having oblique diverging edges, creased to fold on angular lines, formingthree equilateral triangles receivable within the box when expanded, and colored transparent panels secured to said sides over the apertures therein.

2. In a prism shaped paper box composed of a single blank, an imperforate base and a pair of sides, a tab formed with one of said sides, said tab being secured to said base, single end elements extending from the central portion of said blank, said eleedges increasing in width toward their outer ends, and creases formed in said elements whereby they may be folded, said elements being adapted to expand and frietionally engage Within the completed box.

3. In a paper box of triangular cross sec- 5 tion made from a single integral blank, a pair of sides having openings therethrough, transparent coverings over the openings, an imperforate bottom and a pair of end elements, said end elements being foldable into three equal triangular sections engageable 10 by reason of their expansion with the interior of the box.

In testimony whereof I have signed my name to this specification.

WALLACE M. WILLIAMS. 

